Evolutionary Changes in the Developmental Origin of Hatching Gland Cells in Basal Ray-Finned Fishes

2016 ◽  
Vol 33 (3) ◽  
pp. 272 ◽  
Author(s):  
Tatsuki Nagasawa ◽  
Mari Kawaguchi ◽  
Tohru Yano ◽  
Kaori Sano ◽  
Masataka Okabe ◽  
...  
Keyword(s):  
Developmental Origin ◽  
Gland Cells ◽  
Evolutionary Changes ◽  
Hatching Gland

scholarly journals Oviposition and development in the glass frog Hyalinobatrachium orientale (Anura: Centrolenidae)

2015 ◽  
Vol 14 (1) ◽  
pp. 3 ◽  
Author(s):  
Mohsen Nokhbatolfoghahai ◽  
Christopher J. Pollock ◽  
J. Roger Downie
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Small Area ◽  
Tail Length ◽  
Oral Disc ◽  
Progressive Development ◽  
Gland Cells ◽  
Developmental Features ◽  
Hatching Gland ◽  
Scanning Electron

Oviposition and development in the glass frog Hyalinobatrachium orientale (Anura: Centrolenidae). Oviposition and external embryonic developmental features are described in the Tobago glass frog, Hyalinobatrachium orientale. Egg clutches are nearly always laid on the undersides of leaves (one exception); usually leaves of Heliconia sp. are used, but Philodendron and palms may be used in the absence of Heliconia. Clutches contain 28.0 ± 5.3 eggs (mean ± SD) and eggs are 1.86 ± 0.11 mm in diameter. The behavior of one amplectant pair was followed for more than five hours; the pair rotated several times around a small area of the leaf depositing eggs in a tight spiral formation. External embryonic features were observed by scanning electron microscopy. Surface ciliation is extensive up to the time of hatching when it is lost; external gills are short and a cement gland is absent. Hatching gland cells were detectable on the anterodorsal surface of the head from Day 4 after deposition and persisted until at least Day 10, and hatching occurred between Days 9 and 16. During this period, progressive development in tail length, surface pigmentation, intestinal coiling, and oral disc features was observed. Post-hatching larvae reared for six weeks grew 37% in length and tripled in weight, but remained at Gosner Stage 25.

Development of the Xenopus laevis hatching gland and its relationship to surface ectoderm patterning

Development ◽  
1991 ◽  
Vol 111 (2) ◽  
pp. 469-478 ◽  
Author(s):  
T.A. Drysdale ◽  
R.P. Elinson
Keyword(s):  
Retinoic Acid ◽  
Tyrosine Hydroxylase ◽  
Xenopus Laevis ◽  
Ciliated Cells ◽  
Surface Ectoderm ◽  
Gland Cells ◽  
The Face ◽  
Underlying Mechanisms ◽  
Development Proceeds ◽  
Hatching Gland

An antibody that recognizes tyrosine hydroxylase can be used as a marker for hatching gland cells in Xenopus embryos. Using this marker, we have shown that hatching gland cells are induced at the end of gastrulation and that presumptive hatching gland cells are localized to the anterior neural folds in Xenopus. The movements of neurulation bring the hatching gland cells together to form a characteristic Y pattern on the dorsoanterior surface of the head. The Y pattern delineates several zones of surface ectoderm which can be visualized by the presence or absence of ciliated cells. As development proceeds the hatching gland pattern is altered, demonstrating the active changes involved in forming the face. Lithium, UV irradiation and retinoic acid can be used to alter the hatching gland pattern in specific ways which help to understand the underlying mechanisms of ectodermal patterning.

scholarly journals Triazole Fungicides Inhibit Zebrafish Hatching by Blocking the Secretory Function of Hatching Gland Cells

2017 ◽  
Vol 18 (4) ◽  
pp. 710 ◽  
Author(s):  
Javiera De la Paz ◽  
Natalia Beiza ◽  
Susana Paredes-Zúñiga ◽  
Misque Hoare ◽  
Miguel Allende
Keyword(s):  
Secretory Function ◽  
Triazole Fungicides ◽  
Gland Cells ◽  
Hatching Gland

scholarly journals Analysis of the origin and development of hatching gland cells by transplantation of the embryonic shield in the fish, Oryzias latipes

1999 ◽  
Vol 41 (5) ◽  
pp. 557-566 ◽  
Author(s):  
Keiji Inohaya ◽  
Shigeki Yasumasu ◽  
Ikuo Yasumasu ◽  
Ichiro Iuchi ◽  
Kenjiro Yamagami
Keyword(s):  
Oryzias Latipes ◽  
Gland Cells ◽  
Embryonic Shield ◽  
Hatching Gland
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